نرگس صفری

The aim of this study was to fabricate the Mg-1Al-Cu alloys with various amounts of Cu content (0, 0.25, 0.5 and 1 wt.%) using spark plasma sintering (SPS) approach and evaluation of their degradation rate and biological properties. The results indicated that Cu incorporation (0.25 wt.%) significantly diminish degradation rate from 0.039 cm/h in pure Mg to 0.00584 cm/h in Mg-1Al-0.25Cu alloy. In addition, Mg-1Al-0.25Cu alloy could noticeably (1.25 times) promote viability of MG63 cells compared to pure Mg, owing to the optimized ion release. Moreover, the antibacterial activity of Mg-1Al-0.25Cu was considerable. In summary, Mg-1Al-0.25Cu alloy with appropriate degradation rate, good biocompatibility and antibacterial properties can be introduced as a biodegradable orthopedic implant.

The pain caused by cancer affected by 50 to 90 percent of patients with cancer and anxiety caused by these diseases and cancer treatment increases the need for supporting patients, Therefore their coping strategies adopted by patients in adapt is important roles. The aim of this study was to determine the relationship between pain catastrophizing, pain-related anxiety, social support and coping strategies of pain in patients with cancer. Type of cross - sectional study was correlational. A total of 110 cancer patients referred to 5th Azar Hospital (2013) were recruited Convenience sampling into the study. Questionnaire pain catastrophizing, pain anxiety, pain, social support and coping strategies were used. Data were collected and analyzed using SPSS16 software and doing descriptive and inferential statistics, and considering levels of significance (P<0.05). The results showed that Mean and standard deviation of Pain Catastrophizing in patients (23.9±8.8), pain-related anxiety (35.7±18.4), coping strategies (107.9±38.8), social support (151.1±15.8). The Pearson correlation test, showed is significant differences between pain catastrophizing (P=0.00, R=-0.46), pain-related anxiety (P=0/00, R=-0/47), coping strategies (P=0/00, R=0/46) with social support. The results showed that significant differences are between pain catastrophizing pain-related anxiety, coping strategies and social support patients with cancer. Therefore, developing a comprehensive care program for patients cancer with Strengthen coping strategies, Increase social support In order to reduce the level of anxiety and pain catastrophizing is recommended.